On the stereoselective bicyclization of aminodienes catalyzed by chelating diamide complexes of the group 3 metals. A direct comparison of Sc(iii) and Y(iii) bis(amide)s with an application to the synthesis of alkaloid 195F
On the stereoselective bicyclization of aminodienes catalyzed by chelating diamide complexes of the group 3 metals. A direct comparison of Sc(iii) and Y(iii) bis(amide)s with an application to the synthesis of alkaloid 195F
Chelating Diamide Based Rate Enhancement of Intramolecular Alkene Hydroaminations Catalyzed by a Neutral Sc(III) Complex
作者:Joon Young Kim、Tom Livinghouse
DOI:10.1021/ol051574h
日期:2005.9.1
[reaction: see text] Neutral scandium amido complexes are viable catalysts for intramolecular alkenehydroamination. Catalytic activity is strongly coupled to the electronic character of the Sc(III) ligand environment with chelating diamide coordination providing a precatalyst possessing substantially improved activity and superb distereoselectivity in the synthesis of trans-2,5-disubstituted pyrrolidines
On the stereoselective bicyclization of aminodienes catalyzed by chelating diamide complexes of the group 3 metals. A direct comparison of Sc(iii) and Y(iii) bis(amide)s with an application to the synthesis of alkaloid 195F
作者:Tao Jiang、Tom Livinghouse、Helena M. Lovick
DOI:10.1039/c1cc15399d
日期:——
Highly diastereoselective bicyclizations of aminodienes catalyzed by chelating diamide complexes of Sc(III) and Y(III) that lead to pyrrolizidines and indolizidines are described. This bis(annulation) procedure has been utilized in a concise synthesis of the pyrrolizidine alkaloid 195F.